The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2009
Filed:
May. 31, 2007
Applicants:
Kazuo Hashimoto, Kanagawa, JP;
Shouta Takezawa, Saitama, JP;
Kouichiro Takashima, Tokyo, JP;
Inventors:
Assignee:
Sony Corporation, , JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
Abstract
A backlight device includes a light guiding plate disposed on a drive substrate directly attached with a light source to confront the light source to guide the light emitted from the light source into the light guiding plate; and a diffusion sheet and a prism sheet superimposed on the light guiding plate, and arranged to refract the light guided into the light guiding plate, and to emit the light from a front surface of the prism sheet. The prism sheet extends toward the light source, and covering above the gap between the light source and the light guiding plate.